Hey Keg,
Custom grips used to be a lot more popular than they are now. At most major Texas shoots, there would be someone taking orders for grip caps. In those days they were usually silver and/or gold, I don't have a clue about stainless. If anyone knows, it's Skeet's master of trivia and world champion, Robert Paxton, of Paxton Arms (http://www.paxtonarms.com/). He's close to you, up in Richardson (214)651-9018.